Add AdaDelta automatic learning rate (now the default).
Add diagnostics for adaptive learning rate.
Fix wrong progress for balanced dataset (epoch was wrong).
Merge branch 'master' into arno-deeplearning2
Fix formatting of AUC ASCII printout.
Show rate_decay factor only if non-adaptive learning rate is chosen.
Reorganize input options for NN.
Show F1 error in NN grid search.
Only use stopping criteria for training data.
Change default mini-batch size to 100k.
Fix PUB-412.  Report per-Job error on GridSearch page.
Cosmetic upgrade for AUC ROC plot.
Merge branch 'arno-deeplearning2'
Adapt NN JUnit tests to new adaptive learning rate.